{{Chembox | ImageFile = Variegatorubin.svg | ImageSize = 200px | ImageAlt = | ImageFile1 = | ImageSize1 = | ImageAlt1 = | Name=Variegatorubin | IUPACName = (3E)-3-[4-(3,4-Dihydroxyphenyl)-3-hydroxy-5-oxo-2(5H)-furanylidene]-5,6-dihydroxy-1-benzofuran-2(3H)-one | OtherNames= |Section1={{Chembox Identifiers | ChemSpiderID = 52082514 | CASNo=27286-59-5 | CASNo_Ref = {{Cascite|changed|}} | PubChem=136247330 | SMILES = c1cc(c(cc1C2=C(/C(=C\3/c4cc(c(cc4OC3=O)O)O)/OC2=O)O)O)O | InChI = 1/C18H10O9/c19-8-2-1-6(3-9(8)20)13-15(23)16(27-17(13)24)14-7-4-10(21)11(22)5-12(7)26-18(14)25/h1-5,19-23H/b16-14+ | InChIKey = UMIYSJROYJXHSW-JQIJEIRABG | StdInChI = 1S/C18H10O9/c19-8-2-1-6(3-9(8)20)13-15(23)16(27-17(13)24)14-7-4-10(21)11(22)5-12(7)26-18(14)25/h1-5,19-23H/b16-14+ | StdInChIKey = UMIYSJROYJXHSW-JQIJEIRASA-N }} |Section2={{Chembox Properties | C=18 | H=10 | O=9 | MolarMass=370.267 | Appearance= | Density= | MeltingPt= | BoilingPt= | Solubility= }} |Section3={{Chembox Hazards | MainHazards= | FlashPt= | AutoignitionPt = }} }}
'''Variegatorubin''' is a pulvinic acid derivative. It is a red pigment that is present in many members of the Boletales, an order of the division Basidiomycota. It is generated from the oxidation of variegatic acid. Bolete species that contain variegatorubin include ''Neoboletus luridiformis'', ''Chalciporus piperatus'', ''Rhizopogon roseolus'', ''Exsudoporus frostii'', ''Suillellus luridus'', ''Rubroboletus rhodoxanthus'', and ''R. satanas''.<ref name="Gill 2012"/> Variegatorubin was discovered by Wolfgang Steglich and colleagues, and described as a new compound in 1970.<ref name="Steglich 1970"/>
==References== {{Reflist|refs=
<ref name="Gill 2012">{{cite book |author1=Gill, M. |author2=Steglich, W. |title=Pigments of Fungi (Macromycetes) |series=Progress in the Chemistry of Organic Natural Products |volume=51 |url=https://books.google.com/books?id=pvTnCAAAQBAJ&pg=PA35 |year=2012 |publisher=Springer Science & Business Media |isbn=978-3-7091-6971-1 |pages=1–297 (see p. 35)}}</ref>
<ref name="Steglich 1970">{{cite journal |author1=Steglich, W. |author2=Furtner, W. |author3=Prox, A. |title=Variegatorubin, an oxidation product of variegatic acid from ''Suillus piperatus'' (Bull. ex Fr.) O. Kuntze and other Boletaceae |journal=Zeitschrift für Naturforschung B |volume=5 |year=1970 |page=557|doi=10.1515/znb-1970-0529 |s2cid=95770276 |doi-access=free }}</ref>
}}
Category:Fungal pigments Category:Polyphenols Category:Lactones Category:Pentols Category:Furanones Category:Benzofurans Category:Catechols